<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		
		<script>
			
			//1. 算数运算符  + - * / % ++ --
			
			//2. 字符串谅解  +
			
			//3. 关系运算符  > >= < <= == === != !==
			var a = 123;
			var b = "123";
			console.log()
			//4.
			
			//5. 逻辑运算符
			// && 与
			// || 或
			// ! 取反
			
			//6. 条件运算符
		</script>
		
	</body>
</html>
